Answer
parallel
Work Step by Step
Given the vectors $\mathbf{u}=\left(4, \frac{3}{2},-1, \frac{1}{2}\right), \quad \mathbf{v}=\left(-2,-\frac{3}{4}, \frac{1}{2},-\frac{1}{4}\right)$, then
it is easy to note that $u=-2v$ which means that they are parallel.